evilhello.c

来自「jos lab3代码」· C语言 代码 · 共 13 行

// evil hello world -- kernel pointer passed to kernel
// kernel should destroy user environment in response

#include <inc/lib.h>

void
umain(void)
{
	// try to print the kernel entry point as a string!  mua ha ha!
	sys_cputs((char*)0xf0100020, 100);
}